Preheat the Oven:

• Preheat your oven to 375°F (190°C).

Prepare the Chicken:

• Pat the chicken breasts dry with paper towels. Carefully make a pocket in each chicken breast by slicing horizontally without cutting all the way through. Set aside.

Make the Spinach Filling:

• In a medium-sized bowl, combine the softened cream cheese, grated Parmesan, mayonnaise, minced garlic, red pepper flakes, 1/2 teaspoon salt, garlic powder, and onion powder. Stir until the mixture is smooth.

• Add the chopped spinach to the cream cheese mixture and stir until well combined.

Stuff the Chicken:

• Stuff each chicken breast with the spinach cream cheese mixture, evenly dividing the filling between the four breasts. Use toothpicks to secure the opening of each chicken breast, if necessary.

Season and Sear:

• Rub the outside of the chicken breasts with olive oil, paprika, and the remaining 1/2 teaspoon salt.

• Heat a large oven-safe skillet over medium-high heat. Once hot, add the chicken breasts and sear them for 2-3 minutes on each side until golden brown.

Bake:

• Transfer the skillet to the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (75°C).

Serve:

• Remove the toothpicks from the chicken and serve hot.